Provides a means for identifying the conductors of 3-phase interconnected systems by the use of hour (clock-face) numbers, taking as a basis the phase sequence, starting from an arbitrary origin, of their applied voltages.
29.020 Electrical. Including voltages, general electrical terminology, electrical documentation, electrical tables, safety, fire hazard testing, etc. / Электротехника в целом. Включая напряжение, общую терминологию, электротехническую документацию, электрические таблицы, безопасность, испытания на пожароопасность и т.д.
